Bicycle



(No Model.) 2 Sheets-Sheet. l

D. T. DBMARBST.

BICYCLE.

No. 603,006. Patented Apr. 26,1898.

u] l all.

(No Model.) 2 Sheets-Sheet 2.

D. T. DEMAREST.

BICYCLE.

No. L603,006.. PatentedApr. ze. 1898.

EEEES- M .m n. of

UNrrnD Sfrarrsd A'rnri'r @risica DAVID T. DEMAREST, OF ALEXANDRIA, VIRGINIA,

BICYCLE.

SPECIFICATION forming. part of Letters Patent No. 603,005` dated April 26, 1898.

Application filed April 23, 1897.

T0 a/ZZ whom, t may concern:

Be it known that I, DAvID T. DEMAREST, a

citizen of the United States, residing at Alexandi-ia, in the county of Alexandria and State of Virginia, have invented certain new and useful Improvements in Bicycles; and I do hereby declare the following to be a f ull,clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

My invention is an improvement in bicycles; and it consists in the novel features hereinafter described, reference being had to the accompanying drawings, which illustrate one form in which I have contemplated embodying my invention, and said invention is fully disclosed in the following description and claims.

Referring to the drawings, Figure l represents a side view of a diamond-frame bicycle constructed according to my invention. Fig. 2 is a similar view of a drop-frame or ladys bicycle. Fig. 3 is a top plan view of the blank from which the entire frame 4is bent and shaped. Fig. i is a detail perspective View of the frame after bending and shaping. Fig. 5 is a detail perspective view of the front fork and steeringpost, which are formed in one piece. Fig. G is a vertical sectional View, on a larger scale, of the head or sleeve of the machine, the steering-post, and handle-bar support. Fig. 7 is a detail sectional view of the saddle-post and its connections. Fig. 8 is a detail perspective view, on an enlarged scale, of a brace for stiifening the frame and supporting the crank-hanger. Fig. 9 is a detail view of the support for the rear axle. Figs. 10 and ll are detail views of parts of the mechanism hereinafter described.

The frame of my improved machine is coinposed of a single piece of wood, which in the rough is constructed in the general outline indicated in Fig. 3. The end pieces a a of the blank A increase gradually in size from the ends to points a'. Between these points the blank is divided into three longitudinal portions, the outer portions a2 a2 being continuous and the central portion a3 being cut away at the point a, leaving an open space d5 from the point 'd4 to the point a', in rear of the saine. The frame is then bent after` being steamed or otherwise treated to prevent breaking and is caused to assume the general Serial No. 633,455. (No model.)

form shown in Fig. it, the end portions of the blank forming the main bars d a of the frame, the short central arm a3 forming the verticallydisposed connecting-bar and saddlesupport, and the portions a2 a2 forming the rear fork of the frame, between the parts of which the rear wheel revolves.

The forward ends of the bars a a may be connected directly to the steering-head; but in order to give greater rigidity to the frame I prefer to connect the said bars to a sleeve B, formed, preferably, of steel, through which the steering-post passes. These bars are connected to the said sleeve preferably by bands of steel or other suitable metal c c, which are passed around said sleeve and preferably lie in annular recesses therein, so as to be hush with the surface of the sleeve, and said bands c are secured to the bars a by means of rivets or bolts or screws, as found most desirable.

The vertically-disposed connecting-bar as is provided at its upper end with a slightlyreduced portion e6, above which is astill further reduced portion al. Upon the reduced portion d@ I place a tubular socket D, preferabl y of steel, which is riveted or otherwise secured to the bar c3 and extends to the end of the said bar, leaving an annular space between the reduced portion dT and the inside of the tubular guide B. The said guide, it will be seen, will lie lush with the exterior surface of the bar d3 and will be provided about midway of its length with a collar CZ, provided with horizontal dan ges d cl2 cl2, the said collar being brazed or otherwise secured to the sleeve D and the said flanges being secured by screws or rivets to the under side of the bar .a and forked bars a2 d2. (See Figs. l and 7.) I also prefer to provide a brace-plate E (shown in detail in Fig. 10) for the upper side of the joint made at this point. The plate E is provided with forked portions e e,adapted to engage the upper side of the forked bars a2 d2, and said plate is also provided with an aperture e', which its snugly the sleeve or socket D, as shown in Fig. 7. The plate E is placed in position and secured by screws or rivets, as desired.

F represents the usual hollow saddle-post, which engages the recess between the reduced portion a7 of the bar a3 and the sleeve or socket D and is provided at its upper end with Y which is made of a single piece of Wood bifurcated at its lower end to form the forkf` arms g g. The lower ends of the arms g g are provided with longitudinal open slots,I and said slotted portions are preferably incased in sheetsteel; sockets g gf, as shovvn in 5,. So. that theeeid slotted portionsA reeeiveftho axle. of the front Wheel ofthe innohi-ne- The upper portion of the for-k, which, 1 term the. steering-post, is provided with a. slightly?y reduced portion g2, forming a shoulder gz shove the portion o? iso 1f.nntheleneldnoed.por-` tion g4. A collar g5y is placed on the reduced portion. 9.2 With its, lower end nl)utili-.11s,y egenst the. shoulder. g3 and provided externally with bell mee or cone QG- "lhe loner end otV the sleeve. B is, provided with a ball-race l?,v ber tween which end the none o6 are: plnoed n. oef ries o fsteel.y belle. to f orln the ne onlloelleneen?F` inge. It will be observed that there is` nujlar space between the reduced portion gf or? thee'teerins-poet. end. the interioro the sleexeB and Within. this annularspace theholf. low stent tLWhich supports the handl-efbars, tney bei ndj'nnted vertoella. the: Said. hollow SDQJ'IEI being, preferably sli-t foriaportion oli itslength on 'one side in orderthat it may be. clamped pigidlrto-the rednoed portionr of the Steering-poet,-

I" represents a, Clamping-Gellar provided; vvfitll` lulgsc'. to receive the, clamping-.bolld and secure the hollowl Stern of thehnnd1efhare to the steering-post. The said collar I vvill also he provided with, e bell-rope i,.hetween\phteh andv n. oone h. on. the opper. end. o5 the Sleeve- B: are; pleoedn Series of` bells to toont aseo: ond bell-beaune, fon th.e.Ste.e1'ng-post. The. hnndle-borproper may he of any desired; on nenolpottenn In. Fig- 8- I have Shown@ pletewhieh. 1i pre-A for to, employ for neinforoint norv inlproreda Wood. tranne et the ifo-notoire of the enmedio? d2 and which also. servesto support the. orando-i honger of.l the-machine- Thie plete:j K., is `providedwth en erm eedapted to lie upon the upperside of the lower arm a, acenrtralupf, vrddly-entendins tongneo, ed opted to he se.- onredto, the arno o?, end; re,psWnrdhv-entending. arms 16.2762; Whoh-tensose end dre secured, to. 'the fork-arms a2 d2. This plate Kl rei/n forces the parts of the frame at this point end prevents. epleedns,`Sp1ittina-onordohns of the same,

L represente thefornnkhongontWhioh. is off any ordinary or usual construction and' isprovided at each end With lateral arms Z Z, adapted to be secured by bolts. to. the plate K.

In Fig. 9 I have shown a brace-bar adapted to engage each of the curved rear portions of the arms a2 a2 to reinforce the same and at the same time to provide means for holding and adjusting the axle. of the rear Wheel. This reinforcing-plate M has a curved por- -bolt m', engaging the axle and provided with f an adj Listing-nut m2.

Byl looking. my improved freine from e, Singlo peoe of' rood it. iSI olovons that it een he oonetrneted ver-y oheeply and will dispense with a number of joints 'which would othernineY have to he nsedi the oonstruetion et the onine time affording ample Strength eindprovidins. nent and. attraotive appearance..

Fis2 I have. Shoo-n myintproved frame adopted ton nee by poolen,l in. Whoh. the npper Inni-,n tonele-bnn iehent down.preiereloli7 intor engesenlentwith the lowerfreme-ber, to which it is. secured` by a band N or other Snitnlole Ineens. thus. form-ing,- e drop-frame. The other' details of, oonetrnotion 'nre the onlne those previously deeerthed--. The hine will; he tted. with. wheels, driving mechanism; hdndlerbnrs ond; saddlesj of any nenni. on preferred eonstreetion.

Whet; olnlni ond desire to seenrehy Lettene. Fetent. ie..-`v

l.-v 'lhe herein-desontbed blank. fone bicycle trendeoonsetinsoff e Single peoelhevinathe end portionepinterrne-dnte Side portions. conneotns; the end portions and seperetedfrom eeoh other. end the central ernlnterlnedete theside pontions. substantially es described.

2, A. loioyelehevingits fretneoonsisting of the rneisn. here. the side portions. Continuons there-With. oonneeting thev rear end-s.y of said hate. dnd' henttotornl. tl-.lerenr` forlo. the vel'- tioedl-y-diepooed oentrelher eonneoted to one ot here. and. the eleeveseonred to thetorvvard ends, of,y theinainbars, said main here. eontinnons Side. portions dnd: Central han being; torlned of; one piece. substantially desertbed- 3. A bicycle haringitetraineooneiisting of theflnain. here. the side portionsL oon-tnnoue therewith. eonneetina the. neen ende ofi Seid here, seperated. from eeoh. other and loentto forno the neer tools, the vertically-disposed. Qontrol loer oonneoted tothe lovverfof` seid rnonbars,andhewins tsnpperendoonneeted tothejnnotnreoi the Upper mein loarwith Seid Side portions end Sleeve oonneoted to theforvordendsof said 1nanbarsend1nain i boneoontnnone Sdeportionsand central bar heingfonmedgofone piece, snhstentiellynsde- SCzbQd-e.

4, Abicyclecomprisingamon-gitsmembers,

themain bars, the separated side portions con- IIO tinuous therewith, connecting the rear ends of said bars, and bent to form the rear fork the vertically disposed central bar extending from the rear end of the lower main bar and secured to the juncture of the upper main bar with said continuous side portions, saidmain bars, continuous side portions and central bar, being formed of one piece, and a front fork having its steering-post pivotally connected to the forward ends of said main bars, substantially as described.

5. Abicycle comprising among its members the main frame-bars, the separated side portions continuous therewith connecting the rear ends of said main bars, bent to form the rear fork and provided with means for supporting the rear wheel the central bar extending from a point intermediate said side por-4 tions at one end of the same upwardly and connected to the juncture of the upper main frame-bar and the other ends of said side portions, said main bars, side portions and central bar being formed of one piece, a sleeve rigidly secured to the forward ends of said main bars and the brace-plate having portions secured to the lower main frame-bar,

the lower end of said central bar and said side portions and provided with a crankhanger, substantially as described.

6. Abicycle comprising among its members, the main frame-bars, the side portions continuous therewith connecting the rear ends of said main bars, separated and bent to form the rear fork, the central bar extending from the juncture of the lower main frame-bar with said side portions, upwardly, and secured to the juncture of the upper main frame-bar with said side portions, said main bars, side portions and central bar being formed of one piece, said central bar having a sleeve on its upper end, and a reduced portion within said sleeve, the hollow saddle-post engaging said reduced portion,within said sleeve and means for clamping said hollow saddle-post to said reduced portion of the barbetween said sleeve and said bar, substantially as described.

In testimony whereof I affix my signature in presence of two witnesses.

DAVID T. DEMAREST.

Witnesses:

L. P. WHITAKER, J. D. KINGSBERY. 

